If you're anal about audio tags...

[irishScott]

http://www.slothradio.com/covers/

Found all the obscure stuff I could throw at it

 

[Anubis]

im anal about tags but couldent care less about the album art

 

[atomicacid55]

OMG I could even find my Jay Chou albums. This is r0x0rz.

 

[Pepsi90919]

can't even find the joshua tree MFSL cover. yawn.

 

[Howard]

anal bum cover

 

[bucwylde23]

i've also had fairly decent luck with media monkey, it uses amazon to find album art.

 

[mrzed]

I found all of Guy Klucevsek's stuff. That counts as impressive by me.

 

[tc5984]

There are a few I couldn't find. Is there any site like this that allows users to upload missing art?

 

[Ricemarine]

Hmm, they got Japanese album art...
But no korean...

Btw, Creative Media Toolbox Auto Tag cleaner ftw.

 

[SuperFreaky]

Media Monkey FTW